Heddle-frame movement



Nov. 17, 192s- 1.562.268

J. D. WATSON HEDDLE; FRAME MOVEMENT Filed Feb. 1, 24

INVENTOR.

ZS. Wm.

ATTORNEYS.

manufactured paper.

Patented Nov. 17, 1925.

UNITEDV'STATES PATENT OFFICE.

JOHN D. WATSQN, OF APPLE'ION, WISCONSIN.

HEIODLE-FEAME MOVEMENT.

Application filed. February 1,1924. Serial No. 680,919.

To all whom it may cancer.

Be it known that 1, JOHN D. YVATsoN, citizen of the United States, and resident of Appleton, in the county of Outagamierand State of Wisconsin, have invented new and useful Improvements fin Heddle-Frame Movements, of which the following is a description, reference being had to the accompanying drawings, which are a part of this specification.

" Fourdrinier cloth and, the objections noted above. I

Therefore, it is the particular object of this invention to provide means for positively and accurately actuating the heddle frames, thus preventing any looseness or irregularities in the (l1S)lJ.C(-3l1'1611i3 of he heddle frames, which would affect the ('guality or finish of the product of the weaving machinery.

Another object of the invention is to proride a gearing wherein the relative positions of the wire sheds. as controlled by the heddle frames is equalized with respect to the supply of warp wires fed to the heddle frames, anda'lso with respect to the distance between. the two frames.

The details of construction of this invention will be made more apparent as this description proceeds, especially when con sidered in connection with the accompanying drawings, wherein;

Figure 1 is a longitudinal sectional View through a portion of a weaving machine, illustrating in section the heddle frame and a portion of the operating gearing;

Fig. 2 is a sectional view taken in a different vertical plane, illustrating the operating gearing for the main shaft; and

Fig. 3 is a fragmentary sectional view, partly in elevation, of the main shaft.

Referring now particularly, to the drawings wherein like reference characters indicate like parts, it will be noted that there is illustrated a pair of heddle frames and 11, these being the front and rear heddle frames respectively. The frames are customarily rectangular in form and carry a plurality of perforated steel strips 12, through which wires 13 and 14: pass. In practice these perforated strips 12 are-arranged approximately .60 to 100 to the inch,

the wires, 13 and 1e, passing therethrough,

warping the-steel strips slightly, so as not to'materially affect the alignment of the wires. 1

The heddle frames are reciprocally supported by means of chains 15, which extend from opposite sides over a pair of wheels, 16 and 17, both rigidly fixed on a shaft 18, so as to turn together, the shaft being mounted in a supporting frame 19. Thus, during the rcciprocatory. movement of the heddle frames, one of the frames movesupwardly, while the other downwardly, and vice .versa. During the reciprocation of the heddle frames, the one'supported upon the wheel 16 enjoys a movement greater than that supported upon the wheel 17 and thus the wheel 16 is of a larger diameter than the wheel 17.

Associated with each heddle frame is.

a rack, these racks being indicatedby the reference characters 20 and 21, each being connected to its respective heddle frame by means of a connecting member including a turn buckle 22, so that proper adjustment may be made to compensate for wear of the rack and its associated pinion.

Arranged transversely of the racks 20 and 21 is a main shaft 23, this shaft having fixed thereto, pinions 24tand-25 of difien 24 and 25, the heddle frames 10 and 11 are reciprocated simultaneously in opposite directions and to unequal degrees.

Arranged in a different vertical plane on the shaft 23 is a pinion 26, which is adapted to mesh with a pair of racks 27, (see Fig. 2), which are suitably connected to operating levers 28, the connection bellt shaft 32.

tween the racks 2'7 and levers 28 including turn buckles 29, being so that proper adjustment between the levers and racks may be accomplished. An operating shaft 30, is provided with a pair of oppositely extending cams 31, which, upon rotation of the shaft 30 alternately engage the levers 28, rocking these levers on a supporting VJ hen the levers 28 are rocked the racks 27 will be reciprocated simultaneously in opposite directions, whereupon the shaft 23 will be oscillated. The reciprocatory movement of the shaft 23, will, in turn, be transmitted to the racks 20 and 21, through the unequal gears 24 and 25, whereupon, as mentioned hereinbefore the heddle frames, 10 and 11, will be reciprocated, the heddle frame 10 receiving the greater reciprocation, due to the larger gear 24;.

The unequal movement of the heddle frames compensates first for the distance apart of the two frames, and also for the anglev of feed of the warp wires, which in practice are fed to the heddle frames from a point slightly above said frames and inclined downwardly thereto." Thus in order to preserve the relative distance apart of the wires, the frame 10 actuated by the larger gear, is movedupwardly and downwardly a greater distance than the other frame, with the result that the wires at the point 38 where the shuttle is inserted, are substantially in the position they would occupy if the feed wires were in alignment horizontally with the center portions of the heddle frames.

From the foregoing it will be immediately apparent that a simple, compact and positive and accurate gearing is provided for actuating the heddle frames, due regard being taken of conditions which might affect the quality and evenness of the product produced by the weaving machinery, these conditions being properly compensated for so that a possibilityof imperfect or uneven product is eliminated. The gearing is so interconnected as to eliminate the possibility of any looseness of connections which would in a like manner affect the product of the weaving machinery. The turn buckles associated with the various connections provide suitable means for maintaining the gearing in accurate adjustment.

While an embodiment of the invention has been illustrated herein in some detail, it is not intended that the invention be unnecessarily limited but reservation is made to make such changes in the details of con struction and arrangement of parts as may come within the purview of the accompanyclaims.

Having thus described the invention, what is claimed is: 7

1. A heddle frame gearing comprising heddle frames, racks secured to said heddle frames, a shaft provided with pinions of unequal size meshing with said racks, a pair of reciprocating racks, a pinion on said shaft, meshing with said racks, and cam and lever means for reciprocating said last mentioned racks.

2. An equalizing gearing for heddle frames of weaving machines, comprising heddle frames reciprocally supported, racks fixed to said heddle frames, a shaft, a pair of pinions of unequal size on said shaft and meshing with said racks, a pair of reciproeating racks, a pinion on said shaft meshing with said last named racks and cam and lever means for reciprocating said last named racks to oscillate said shaft.

3. An equalizing gearing frames of weaving machines, comprising heddle frames reciprocally supported, racks fixed to said heddle frames, a shaft, a pair of pinions of unequal size on said shaft and meshing with said racks, a pair of recipro eating racks, a pinion on said shaft meshing with said last named racks and means for actuating said racks whereby said shaft will JOHN D. WATSON.

for heddle 

